"Don't show this page again" not working

[Gdg]

Hello,
I can't get rid of the welcome page of web maintanance site.

Sys infos:
. Licensed MinimServer 2.2 update 250
. on QNAP TS-431-X
. with firmware QTS 5.1.5.2679
. Chrome 125.0.6422.112 (64 bit)
. on Windows 10 Pro 22H2 Build 19045.4412
. with no ad-block running

Any suggestion?

Thank you